King Juan Carlos Center
College/University in New York City, NY · 51 Washington Square South · 10012
At a glance
King Juan Carlos Center is a 61,405-square-foot college/university building at 51 Washington Square South in New York City, New York, built in 1890. In its 2024 New York City benchmarking disclosure it reported a site energy-use intensity of 27.1 kBtu/ft² and 191 tCO₂e of greenhouse-gas emissions.
Local Law 84 (LL84) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 27.1 kBtu/ft² |
| Source EUI | 75.8 kBtu/ft² |
| GHG emissions | 191 tCO₂e |
| GHG intensity | 3.1 kgCO₂e/ft² |
| Electricity | 487,089 kWh |
| Gross floor area | 61,405 sq ft |
| Source record | nyc:2825703:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | — | 27.1 kBtu/ft² | 191 tCO₂e | |
| 2023 | — | 31.1 kBtu/ft² | 208 tCO₂e | |
| 2022 | — | 28.9 kBtu/ft² | 150 tCO₂e |
Compliance context
Local Law 84 (LL84)
Under Local Law 97, buildings over 25,000 sq ft face carbon caps with fines of $268 per metric ton of CO₂e over the limit, phasing in from 2024.
Ownership
No owning organisation shown. Names of private individuals in the disclosure are not published here.
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Location
- Address
- 51 Washington Square South
- City
- New York City
- State
- New York
- ZIP
- 10012
- Coordinates
- 40.73063, -73.99878
Within ~1 km
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See also: most efficient in New York City · biggest emitters
How does King Juan Carlos Center compare with other college/university buildings in New York City?
The latest disclosures cover 553 college/university buildings in New York City, out of 48,310 buildings citywide. Its site EUI of 27.1 kBtu/ft² is about 71% below the average of 94.5 kBtu/ft² — it uses less energy per square foot than the typical building in that group. Its emissions intensity of 3.1 kgCO₂e/ft² is about half of the group average of 6.0 kgCO₂e/ft².
At 61,405 sq ft, it is about 70% below the average floor area of 202,329 sq ft for those buildings. It was built in 1890, 57 years earlier than the group's average year built (1947). Across all 24 jurisdictions BuildingCensus covers, the 2,113 college/university buildings average an ENERGY STAR score of 68 and a site EUI of 98.7 kBtu/ft².
How has King Juan Carlos Center's energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for King Juan Carlos Center, covering report years 2022–2024. Site EUI moved from 28.9 kBtu/ft² (2022) to 27.1 kBtu/ft² (2024), a 6% decrease. Reported emissions went from 150 tCO₂e to 191 tCO₂e over the same span (up 28%).
What does a site EUI of 27.1 kBtu/ft² mean?
Site energy-use intensity (EUI) is the energy a building uses on site in a year divided by its floor area, in thousand Btu per square foot — lower is more efficient. King Juan Carlos Center's 27.1 kBtu/ft² across 61,405 sq ft works out to about 1.7 billion Btu (488 MWh-equivalent) in 2024. Its source EUI of 75.8 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 487,089 kWh of electricity for the year.
Which law requires King Juan Carlos Center to report its energy use?
King Juan Carlos Center reports under Local Law 84 (LL84), the legal basis of New York City's Energy and Water Data Disclosure program, which publishes each covered building's annual benchmarking results. The record shown here is the report-year 2024 disclosure (source record nyc:2825703:2024). Under Local Law 97, buildings over 25,000 sq ft face carbon caps with fines of $268 per metric ton of CO₂e over the limit, phasing in from 2024.
More college/university buildings in New York City
- CUNY SC > CCNY_320_CCNY: Structural Biology Center· 61,180 sq ft
- CUNY SC > CT_426_Klitgord Center· 60,347 sq ft · EUI 395.5 kBtu/ft²
- Duke Mansion· 60,184 sq ft · EUI 42.8 kBtu/ft²
- Waverly Building· 60,107 sq ft · EUI 113.5 kBtu/ft²
- Mathematics· 60,033 sq ft
- Lewisohn· 59,997 sq ft
- College/University buildings in New York City· 553 benchmarked
- All New York City benchmarked buildings· Local Law 84 (LL84)
- Most efficient large buildings in New York City
- Least efficient large buildings in New York City
- Biggest emitters in New York City
Frequently asked questions
What is King Juan Carlos Center's energy grade?
King Juan Carlos Center did not report an ENERGY STAR score in its 2024 disclosure, but its site energy-use intensity was 27.1 kBtu/ft².
How much energy does King Juan Carlos Center use?
Its 2024 site energy-use intensity was 27.1 kBtu/ft² (75.8 kBtu/ft² source) across 61,405 sq ft, including 487,089 kWh of electricity.
What are King Juan Carlos Center's carbon emissions?
King Juan Carlos Center reported 191 tCO₂e of greenhouse-gas emissions (3.1 kgCO₂e/ft²) for 2024.
Where is King Juan Carlos Center?
King Juan Carlos Center is at 51 Washington Square South, in New York City, New York 10012. Its coordinates are 40.73063, -73.99878 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is King Juan Carlos Center and when was it built?
King Juan Carlos Center has 61,405 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1890 as its year built. It is classed as college/university.
Is King Juan Carlos Center covered by Local Law 84 (LL84)?
Yes — it appears in the 2024 Energy and Water Data Disclosure disclosure, which lists the buildings reporting under Local Law 84 (LL84).
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About this data
Source: Energy and Water Data Disclosure (Local Law 84 (LL84)), as published October 2, 2026. See the methodology for how records are matched, cleaned and scored.
Cite as: BuildingCensus, “King Juan Carlos Center, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/king-juan-carlos-center-21a99596 (data as of October 2, 2026).